Note 10 - Segment Information (Details) - Segment Reporting Information - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Revenue	$ 29,467	$ 30,924	$ 58,733	$ 58,960
Operating income:
Operating income	513	1,010	862	907
Interest expense:
Interest expense	82	41	140	84
Other expense (income), net:
Other expense (income), net	(33)	(68)	(60)	(113)
Income before income tax expense:
Income before income tax expense	464	1,037	782	936
Income tax expense:
Income tax expense	200	233	351	352
Net income (loss) from continuing operations:
Net income from continuing operations	264	804	431	584
Depreciation and amortization:
Depreciation and amortization	476	418	944	830
Capital expenditures:
Capital expenditures	322	316	905	674
UNITED STATES
Revenue:
Revenue	11,105	12,641	22,077	23,599
Operating income:
Operating income	317	561	244	297
Interest expense:
Interest expense	20	20	41	39
Other expense (income), net:
Other expense (income), net				1
Income before income tax expense:
Income before income tax expense	297	541	203	257
Income tax expense:
Income tax expense	(9)		(9)
Net income (loss) from continuing operations:
Net income from continuing operations	306	541	212	257
Depreciation and amortization:
Depreciation and amortization	342	323	661	643
Capital expenditures:
Capital expenditures	211	216	705	513
International [Member]
Revenue:
Revenue	18,362	18,283	36,656	35,361
Operating income:
Operating income	196	449	618	610
Interest expense:
Interest expense	62	21	99	45
Other expense (income), net:
Other expense (income), net	(33)	(68)	(60)	(114)
Income before income tax expense:
Income before income tax expense	167	496	579	679
Income tax expense:
Income tax expense	209	233	360	352
Net income (loss) from continuing operations:
Net income from continuing operations	(42)	263	219	327
Depreciation and amortization:
Depreciation and amortization	134	95	283	187
Capital expenditures:
Capital expenditures	$ 111	$ 100	$ 200	$ 161